Patented system uses low profile cars running on twin races of Torlon ball bearings. Cars use the existing luff groove of the mast (no track or installation work required). Ball bearings are captive for easy loading and unloading of cars from mast. They can be easily switched between fully battened and "soft luff" mainsails. Minimum distance from mast to mainsail luff enhances mainsail efficiency.

Quick-Release batten receptacle cars allow quick and easy removal of the mainsail for changeover, repair or stowage. Stainless steel ball joint links provide movement in all directions and up to 112 degrees either side of centre - also available to suit.